T.M.
Before you start any prescription drugs, like anti-depressants I would encourage you to try a variety of vitamins and get some daily exercise (does not have to be anything strenuous a thirty minute walk will do). I to have suffered with bouts of depression and anxiety at times (also feeling at times like I have had permanent PMS) and it usually strikes me when I am not taking my vitamins or getting some exercise. Believe me if you ask for anti-depressants from the docs or don't even ask they will prescribed them without blinking an eye, I was offered them without even asking me about diet, exercise or vitamins because they don't care. Anti-depressants can help but, do you really want to be dependent on some drug, maybe if you have exhausted all other options and it is your last hope. I would suggest some exercise and these vitamins: a Women's One Daily multivitamin, Magnesium 250mg, B-100 Complex (B vitamins are very important), Evening Primrose Oil 1000mg, sometimes I take additional Calcium supplement, and a combo vitamin C 500mg & E 400mg pill; you might want to try a zinc supplement as well
I hope you will try something like this before getting on drugs, I am a nurse so I do think drugs are necessary for lots of things but for this I would exhaust all other options. The web gives a lot of different vitamin combos for depression, try them and see what works for you. Best of luck to you.